2005 LSSV Owner Manual Supplement - Fleet Cars, … · GMC Emblem, and the names SILVERADO and SIERRA ... and the owner manual with the vehicle. ... GM Goodwrench® dealer for this

Seats and Restraint System ............................. 1-1Troop Seats .............................................. 1-2Safety Belts .............................................. 1-4

Features and Controls ..................................... 2-1Windows .................................................. 2-2Starting and Operating Your Vehicle ............. 2-3Backup Alarm ............................................ 2-4Accessory Power 24 Volt ............................ 2-4Storage Areas ........................................... 2-5Gun Rack ................................................. 2-8Pioneer Tool Kit ....................................... 2-10

Instrument Panel ............................................. 3-1Instrument Panel ........................................ 3-2Warning Lights, Gages and Indicators ........... 3-8

Driving Your Vehicle ....................................... 4-1Your Driving, the Road, and Your Vehicle ..... 4-2Towing ................................................... 4-10

Service and Appearance Care .......................... 5-1Fuel ......................................................... 5-3Checking Things Under the Hood ................. 5-4Electrical System ...................................... 5-15Tires ...................................................... 5-18Appearance Care ..................................... 5-46Four-Wheel Drive ..................................... 5-48Front Axle ............................................... 5-48Rear Axle ............................................... 5-48Bulb Replacement .................................... 5-49Vehicle Identification ................................. 5-52Capacities and Specifications ..................... 5-53

Maintenance Schedule ..................................... 6-1Maintenance Schedule ................................ 6-2

Customer Assistance Information .................... 7-1Customer Assistance and Information ........... 7-2

Index ................................................................ 1

2005 LSSV Owner Manual Supplement M

2005 - LSSV Owner Manual Supplement

GENERAL MOTORS, GM, the GM Emblem,CHEVROLET, the CHEVROLET Emblem, GMC, theGMC Emblem, and the names SILVERADO and SIERRAare registered trademarks of General Motors Corporation.

The information in this manual supplements the ownermanual. This manual includes the latest informationavailable at the time it was printed. We reserve theright to make changes in the product after that timewithout notice

Please keep this manual with the owner manual in thevehicle, so it will be there if you ever need it while you areon the road. If you sell your vehicle, leave this manualand the owner manual with the vehicle.

How to Use This SupplementThis supplement contains information specific to themilitary upfit on your vehicle. It does not explaineverything you need to know about your vehicle. Youmust use this supplement along with your GM ownermanual. Only then will you be able to properly operateand maintain your vehicle. Many people read their ownermanual supplement from beginning to end when they firstreceive their new vehicle. If you do this, it will help youlearn about the features and controls for your vehicle.In this supplement, you will find that pictures and wordswork together to explain things quickly.

IndexA good place to look for what you need is the Index inback of the manual. It is an alphabetical list of what is inthe manual, and the page number where you will find it.

Litho in U.S.A.Part No. LSSVOM05 ©2005 General Motors Corporation. All Rights Reserved.

ii


Safety Warnings and SymbolsYou will find a number of safety cautions in this book.We use a box and the word CAUTION to tell you aboutthings that could cause personal injury if you were toignore the warning.

{CAUTION:

These mean there is something that could hurtyou or other people.

In the caution area, we tell you what the hazard is.Then we tell you what to do to help avoid or reduce thehazard. Please read these cautions. If you do not,you or others could be hurt.

You will also find a circlewith a slash through it inthis book. This safetysymbol means “Do not,”“Do Not do this” or“Do Not let this happen.”

Vehicle Damage WarningsAlso, in this supplement manual you will find notices.

Notice: These mean there is something that coulddamage your vehicle.

In the notice area, we tell you about something that candamage the vehicle. Many times, this damage wouldnot be covered by the warranty, and it could be costly.But the notice will tell you what to do to help avoidthe damage.

When you read other manuals, you might seeCAUTION and NOTICE warnings in different colorsor in different words.

You will also see warning labels on the vehicle.They use the same words, CAUTION or NOTICE.

iii


✍ NOTES

iv


Troop Seats .....................................................1-2Troop Seat Operation ......................................1-2

Safety Belts .....................................................1-4Safety Belts: They Are for Everyone .................1-4

Section 1 Seats and Restraint System

1-1


Troop Seats

Troop Seat OperationIf the vehicle is a Cargo/Troop carrier, it may beequipped with troop seats. They provide seating forup to eight passengers in the cargo area. The seatbottoms can be lowered individually for use or foldedup to provide more cargo space. The seat bottomslock in either the up or down positions.

A quick-release pin is located on the left and right side ofthe troop seat leg immediately under the hinge pin.

When the seat is in the up position, the quick releasepin will go through the left-hand leg and the right-handleg of the seats. It will then go through the seatchannel, to secure them in the cargo or up position.

1-2


Folding the Troop Seat

{CAUTION:

A seat that is not locked into place properlycan move around in a collision or sudden stop.That could cause injury to the person sittingthere. Be sure to lock the seat into placeproperly when installing it.

To fold the seat to the passenger position do thefollowing:

1. Remove the pin andplace the legs into thejoint of the cargoarea side and the floor.

2. Place the pin inthe hole providedunder the hinge pin.The seat is now lockedin the down position.

To return to the cargo or up position reversesteps 1 and 2.

1-3


Safety Belts

Safety Belts: They Are for EveryoneThis part of the manual tells you how to use thesafety belt properly.

It is very important for rear passengers to have thesafety belt attached properly. The belt may help rearpassengers from being thrown out of the cargo areain a crash.

Whenever the troop seats are occupied, the safety beltmust be installed.

Secure the belt across the cargo storage area byattaching the two clips on the belt to the tie-downlocations on the seat backs at the rear of storage area.Be sure that the latches are in the locked position.The latches are in the locked position when they areparallel to the front and back edge of the belt clips.

1-4


Windows .........................................................2-2Manual Windows ............................................2-2

Starting and Operating Your Vehicle .................2-3Starting Your Vehicle ......................................2-3Vehicle Load Disconnect Switch .......................2-3

Backup Alarm ..................................................2-4Accessory Power 24 Volt ..................................2-4

Storage Areas ..................................................2-5Cargo Cover ..................................................2-5

Gun Rack ........................................................2-8Floor Mount ...................................................2-8Cab Mount ....................................................2-9

Pioneer Tool Kit .............................................2-10

Section 2 Features and Controls

2-1


Windows

Manual WindowsThe vehicle may have this feature, a fiberglass cap.The cap has dark tinted glass, swing open side windowsand a swing open rear access door. The side windowhandles and door handles have lock cylinders to securethem closed.

Side Windows

You will be able to open the side window by turningthe window handles (A) in a clockwise direction, whichwill allow you to lift the window with the assistanceof the struts.

Rear Door

You will be able to open the access door by turningthe door handles (A) in a counterclockwise direction,which will allow you to lift the door with the assistanceof the struts.

2-2


Starting and OperatingYour Vehicle

Starting Your VehicleThe diesel engine starts differently than a gasoline engine.

{CAUTION:

Do not use gasoline or starting aids, such asether, in the air intake. They could damageyour engine. There could also be a fire, whichcould cause serious personal injury.

Refer to the 2005 DURAMAX® Diesel Engine OwnerManual Supplement, located in the glove compartment.

Vehicle Load Disconnect SwitchThe vehicle may have this feature, a load disconnectswitch. The switch disconnects 12-volt vehicle loadsand 24-volt trailer/aux loads that could cause a parasiticdrain on the batteries.

Notice: If you will not be using your vehicle fora period of 48 hours or more, you will need todisconnect battery power from the vehicle toprevent the batteries from discharging. Continueddischarging could damage the batteries. Whenthis switch is in the OFF position the main batteryfeeds to the starter and NATO jump start connectorremain powered.

Pickup and Maintenance Body

The load disconnect switch (A) is located on theunderhood fuse block. The underhood fuse block islocated on the driver’s side of the vehicle, to the rearof the 24-volt battery.

The switch should be in the OFF position any time theexpected vehicle storage time is to exceed 48 hours.

2-3


Ambulance Body

The load disconnect switch (A) is located under theaccessory panel.

The switch should be placed in the OFF position any timethe expected vehicle storage time is to exceed 48 hours.

Backup AlarmThe ambulance vehicle features an audible warningsignal that makes it safer when the vehicle is inreverse (R). This will alert others that the vehicle isbacking up.

Accessory Power 24 Volt

Your vehicle may be equipped with a 24 Volt AccessoryPower circuit. The connector (A) is located in theengine compartment on the driver’s side rear cornerof the vehicle under the fender support brace (B).The circuit is identified with a label stating 24V AUX.The circuit is protected by a 25 amp fuse. The accessoryside of the connector is supplied, the terminalfor that connector will be needed. Contact yourGM Goodwrench® dealer for this part.

2-4


Storage Areas

Cargo CoverThe vehicle may have this feature, a soft top cargocover. The cargo cover is made of a waterproof, welded,plastic coated polyester. For care and cleaning of thecargo cover, see cargo cover under Service andAppearance Care. The cover must be fully installedand properly anchored before traveling on the highway.

Notice: If you raise or lower the cargo cover whilethe vehicle is in motion, you could damage the coveror the cover components. The repair would not becovered under your vehicle’s warranty. Always putthe automatic transmission in PARK (P) and thetransfer case in a drive gear and not in NEUTRALbefore raising or lowering the cargo cover.

The side panels and rear panel of the cargo covercan be rolled up. The cargo cover allows ventilationwithin the closed portion through opening vents locatedon the front and rear of the top.

Rolling Up the Side Panels:1. Release tension on the

side hooks by pushingthe release on thefront of the hook.

2. Remove the plastic hooks from the bed fastener.3. Pull apart the velcro flaps on both side panels

near the vehicle cab.4. Pull apart the velcro flaps on both side panels

near the back of the vehicle.5. Roll the side evenly upward, repeat for the

other sides.6. When the sides reach the top, they can be held

in place by inserting the cargo cover straps in theclips at the top of the cargo cover.

2-5


Storing the Cargo Cover:1. Release tension on the side hooks by pushing the

release on the front of the hook.

2. Remove the plastic hooks from the bed fastener.

3. Pull apart the velcro flaps on both side panels nearthe vehicle cab.

4. Pull apart the velcro flaps on both panels near theback of the vehicle.

5. Release the six cover straps, located on the topinside the cargo box that attaches the cover tothe cargo cover bows.

6. Remove the cover from the cargo cover bows.

7. Fold the cover neatly and store it behind the seatin the truck cab.

8. Release the four cornersupport straps.

2-6


9. Remove the six quickrelease pins from thesides of the cargocover bows.

10. Stack the bows on top of each other withoutstriking the cab or the troop seats (if equipped),push down equally on both sides of the upper partof the front and rear bows.

11. Pull upward equally on both sides of the upperpart of the center bow.

12. Standing at the rear of the vehicle, push thebows forward.

13. Secure the bows inplace with the frontsupport straps.

To reinstall the cargo cover, reverse Steps 1 through 13.

Note: The cargo cover is marked with the word FRONTon the inside top to aid in proper positioning of thecover onto the vehicle.

2-7


Gun Rack

Floor Mount

{CAUTION:

If a gun is not properly stored, it could bethrown about the vehicle in a crash or suddenmaneuver. You and others in the vehiclecould be injured. When ever you store a gunin the vehicle, always be sure that it is storedsecurely in the proper location.

The gun rack is designed for secure storage andeasy mounting and dismounting of the gun.

The floor mount gun rack is located behind thefront seats and will secure two guns.

Mounting the Gun1. Insert the stock of the gun into the center of the

lower mount. The lip of the lower mount must befully around the stock.

2. Place the barrel into the upper mount push untilfully seated in the clamp.

3. Grasp and tug the gun up and down andside-to-side to ensure the gun is securely installed.

2-8


Cab Mount

{CAUTION:

If a gun is not properly stored, it could bethrown about the vehicle in a crash or suddenmaneuver. You and others in the vehiclecould be injured. When ever you store a gunin the vehicle, always be sure that it is storedsecurely in the proper location.

The cab mounted gun racks are located at the rearof the cab and will secure one gun each.

Mounting the Gun1. Place the stock of

the gun into thecenter of the lowermount. The lip ofthe lower mountmust be fullyaround the stock.

2. Place the barrel intothe upper mountuntil fully seatedand secure usingthe buckle and strap.

3. Grasp and tug the gun up and down andside-to-side to ensure the gun is securelyinstalled.

2-9


Pioneer Tool Kit

{CAUTION:

Improperly stored Pioneer Tool Kit could bethrown about the vehicle during a collisionor sudden maneuver. You or others could beinjured. If you remove the tool kit, alwaysstore it in the proper storage location. Whenyou put it back, always be sure that is securelyreattached in the mounting brackets.

The Pioneer tool kit is a multi-purpose tool. It incorporatesseven basic hand tools into one compact unit based ona Hudson Bay-style ax with a 36 inch handle. All theattachments are stored in the carrying case (A) that slidesonto the handle for storage. The entire unit is mounted inbrackets located on the interior rear cab wall. Removeby pulling out the hitch pin (B) from the ax and lifting andsliding it off the brackets. When you are finished using thetool kit, install all tools into the storage bag. Slide the bagonto the handle, install the ax into the storage brackets,and install the hitch pin. For additional information on theusage of this tool refer to the manufacturer’s instructions.

2-10


Instrument Panel ..............................................3-2Accessory Panel Overview ...............................3-2Exterior Lamps ...............................................3-3Operating Service and Blackout Lighting ............3-5Interior Lamps ................................................3-7

Warning Lights, Gages and Indicators ...............3-8Voltmeter Gage ..............................................3-8Air Filter Restriction Indicator ..........................3-10Tire Pressure Monitor Display .........................3-10

Section 3 Instrument Panel

3-1


Instrument PanelAccessory Panel Overview

3-2


The main components of your instrument panel arethe following:A. Tire Pressure Monitoring System Gage.

See Tire Pressure Monitor Display on page 3-10.B. Tire Pressure Monitoring System Switch Panel.

See Tire Pressure Monitor System Switch Panelon page 5-33.

C. Blackout Lighting Switches. See Exterior Lampson page 3-3.

D. Fiberglass Cap Dome Lamp Switch. See InteriorLamps on page 3-7.

E. Air Filter Restriction Indicator. See Air FilterRestriction Indicator on page 3-10.

F. 24 Voltmeter Gage. See Voltmeter Gageon page 3-8.

G. Power Take Off (PTO). See Power Take-Off (PTO)on page 4-13.

Exterior Lamps

Service and Blackout LightingNote: Before operating the vehicle, visually inspect theexterior lighting to ensure that all lights are operatingcorrectly in blackout and non-blackout modes. Ensurethat lights and reflectors are not obscured by dirt orhave broken lenses.

The blackout driving light is mounted on the frontbumper grille guard on the left side of the vehicle.The blackout marker lamps are located on the front leftand right sides of the vehicle. The blackout stoplightsare on the rear left and right sides of the vehicle.The military blackout lighting provides a stealthy lowillumination to standard lighting systems.

Within the rear marker lamps are separate colormarkers. Yellow will illuminate for the brakes andred will illuminate for the drive mode. The frontmarkers illuminate yellow.

3-3


Service Lights/Blackout ControlNotice: If the vehicle is not going to be driven for24 hours or more, the service lights switch mustbe placed in the “ALL OFF” position. This will helpprevent the batteries from discharging. Continueddischarging could damage the batteries. Beforenormal driving operations, turn on service lights toensure headlights, brake lights and turn signalsare operational.

The switch located on the left side of the accessorypanel is the service lights/blackout control.

With the ignition switch in the ON Position:• Pull the switch outward then push upward to the

service ON position. All normal service lampswill be operational with normal controls.

• Move the service lights/blackout switch to thecenter ALL OFF position. All lamps and accessorypower to the vehicle will turn off.

• Move the switch to the blackout position, thefollowing will occur:

− The blackout lighting system will be operative.− The front and rear blackout marker lamps

will illuminate.− The blackout stop lamps will illuminate when

the brakes are applied.

− The instrument panel warning lights willremain functional.

− The hazard lights will remain functional.− The horn will not be functional.

The vehicle’s military 12-pin trailer wiring connector andtrailer lamps are also controlled by this switch.

Blackout Drive Light ControlThe switch located on the left side of the accessorypanel next to the service light switch is the blackout drivelight control.

The service lights/blackout control switch must be inblackout position or in the down position for the blackoutdrive light to function.

With the ignition switch in the ON position:

• Pull the switch outward then up to the ON position,the front blackout drive lamp will activate.

• Pull the switch outward then down to the OFFposition, the blackout drive lamp will deactivate.

• The switch will return to the center positionautomatically after you release it from either theON or OFF position.

3-4


Operating Service and Blackout LightingThe following are function charts for the service light/blackout control switch and determines under what conditionsvarious exterior and interior lighting functions activate.

Exterior Lamp or Device Service Lights/Blackout Switch

Blackout DriveLight Switch

Headlamps and Taillamps SERVICE ON OFF

Parking Lamps SERVICE ON OFF

Front/Rear Side Marker Lamps SERVICE ON OFF

Marker Lamps; Roof,Fender and End Gate SERVICE ON OFF

Stoplamps SERVICE ON OFF

Back-up Lamps SERVICE ON OFF

License Plate Lamps SERVICE ON OFF

Front/Rear Turn Signals SERVICE ON OFF

Hazard Warning Lamps ALL POSITIONS ON/OFF

Cargo Lamp (If Equipped) SERVICE ON OFF

Horn SERVICE ON OFF

Front/Rear BlackoutMarker Lamps BLACKOUT ON/OFF

Blackout Stop Lamps BLACKOUT ON/OFF

Blackout Drive Lamp (Headlamp) BLACKOUT ON

3-5


Interior Lamp or Device Service Lights/Blackout Switch

Blackout DriveLight Switch

Instrument Panel/Switch Illumination SERVICE ON OFF

Radio/Clock Illumination SERVICE ON OFF

Headlamp High-Beam Indicator ALL POSITIONS OFF

Turn Signal Indicators SERVICE ON OFF

Four-Wheel Drive Indicator ALL POSITIONS ON/OFF

Dome/Courtesy Lamps SERVICE ON OFF

Glove Compartment Lamp(if equipped) SERVICE ON OFF

Tire Pressure Monitoring GageIllumination SERVICE ON OFF

Warning Chime: Headlamps On,Instrument Cluster Warning Lights SERVICE ON ON/OFF

Hazard Warning Indicators ALL POSITIONS OFF

3-6


Interior Lamps

Topper Dome LampIf the vehicle has this feature, a fiberglass cap, it willinclude a white interior illumination lamp. The lampis located top center of the rear panel, above the caprear door. Switches located in the cab and cargo area ofthe vehicle control the lamp. The lamp will not functionwhen the vehicle is in blackout mode.

The interior 3-way switch (A) is located on theaccessory panel.

The bed mounted 3-way switch (A) is located in theleft rear of the cargo area.

3-7


The lamp mounted override switch (A) is located on thelamp. If the master switch is turned OFF the followingwill occur:

• The interior mounted 3-way switch will not function.

• The cargo area mounted 3-way switch will notfunction.

Warning Lights, Gagesand Indicators

Voltmeter GageReadings in either red warning zone indicate a possibleproblem in the electrical system. When the engineis not running, but the ignition is in RUN, this gageshows the 24-volt battery’s state of charge. When theengine is running, the gage shows the condition ofthe 24-volt charging system. Readings in the lowwarning zone may occur when a large number ofelectrical accessories are operating in the vehicle andthe engine is left at an idle for an extended period.This condition is normal since the charging systemmay not be able to provide full power at engine idle.As engine speeds are increased, this condition shouldcorrect itself because higher engine speeds allowthe charging system to create maximum power.

The 24-voltmeter gage is located in the lower right sideof the accessory panel.

3-8


Voltmeter Gage Operation

Engine Running

The gage needle shouldbe in the green band whenengine speed is abovean idle. If the needle isnot in the green band, thefuse element may havemelted. If the fuse isnot open and the systemstill does not operateproperly, consult yourGM Goodwrench® dealer.

Engine Off

In a no load situation,with the engine off, thegage needle should bemid-way between the redband and green band,in the yellow band.If the gage needle is in thelower end of the yellowband, this is unacceptable,and the 24-volt batterymay have run down.

3-9


Air Filter Restriction Indicator

If the vehicle has this feature, a gage will be locatedon the accessory panel. It monitors the engine air filter.As the filter gets dirty, the yellow indicator will beginto rise. When it reaches the top of the scale, the filtershould be replaced. After replacing the filter, resetthe gage by pressing in the yellow reset button (A)at the bottom of the gage.

Tire Pressure Monitor Display

The Tire Pressure Monitor (TPM) system uses radioand sensor technology to check tire pressure levelsand temperature. If the vehicle has this feature, sensorsare mounted on each tire and wheel assembly, exceptthe spare tire. The TPM sensors transmit tire pressureand temperature readings to a receiver located inthe vehicle. The TPM display is located on the lowerdriver side of the windshield molding. For additionalinformation and details about the TPM operationand displays see Tire Pressure Monitor System onpage 5-18.

3-10


Your Driving, the Road, and Your Vehicle ..........4-2Loading Your Vehicle ......................................4-2Front Mounted Receiver ..................................4-4Rear Mounted Receiver ...................................4-6Recovery Loops .............................................4-8Enhanced Suspension System ........................4-10Underbody Protection ....................................4-10

Towing ..........................................................4-10Towing Your Vehicle .....................................4-10Trailer Connections .......................................4-11Pintle Hitch ..................................................4-11Towing a Trailer ...........................................4-12Power Take-Off (PTO) ...................................4-13

Section 4 Driving Your Vehicle

4-1


Your Driving, the Road, andYour Vehicle

Loading Your Vehicle

{CAUTION:

Do not load your vehicle any heavier than theGross Vehicle Weight Rating (GVWR), or eitherthe maximum front or rear Gross Axle WeightRating (GAWR). If you do, parts on yourvehicle can break, and it can change the wayyour vehicle handles. These could cause youto lose control and crash. Also, overloadingcan shorten the life of your vehicle.

It is very important to know how much weight yourvehicle can carry. This weight is called the vehiclecapacity weight and includes the weight of all occupants,cargo and all military-installed options. The GVWRincludes the weight of the vehicle, all occupants, fueland cargo. Three labels on your vehicle show how muchweight it was designed to carry and other informationimportant to the vehicle, the Vehicle Identification label,Shipping Data Plate label and the Certification/Tirelabel. These labels are located on the driver’s door.

Notice: Overloading your vehicle may causedamage. Repairs would not be covered by yourwarranty. Do not overload your vehicle.

Be sure to spread out your load equally on both sides ofthe center line. Refer to Loading Your Vehicle andOff-Road Driving in the 2005 Vehicle Owner Manual formore information on vehicle loading.

4-2


Shipping Data Label

A vehicle specific shipping data label is found on thedriver’s inner door panel above the vehicle identificationplate. This label includes the vehicle loading curband gross vehicle weight (GVW) (B) and vehicledimensions (A). For actual vehicle specifications referto label on vehicle.

The curb weight is the vehicle weight without cargoor occupants. The GVW is the total weight of theloaded vehicle.

Never exceed the weights for your vehicle.

Vehicle Identification Label

A vehicle specific vehicle identification label is found onthe driver’s inner door panel under the shipping dataplate. This plate includes the make and model (A),manufacturers VIN number (B), curb weight (C),maximum payload (D), Gross Vehicle Weight Rating(GVWR) (E), and Gross Combined Weight Rating(GCWR) (F). For actual vehicle specifications referto label on vehicle.

4-3


The curb weight is the vehicle weight without cargo oroccupants. The maximum payload is the maximumallowable weight of cargo and occupants the vehicle isdesigned to carry. The GVWR includes the weightof the vehicle, all occupants, fuel and cargo. The GCWRis the total weight of the vehicle, all occupants, fuel,cargo and trailer.

Never exceed the weights for your vehicle.

Front Mounted ReceiverThe vehicle may feature a front mounted receiver. Youcan use the receiver with a power winch platform orwith other accessories. Never use the front mountedreceiver to tow a trailer. Never use the front mountedreceiver without the receiver extension. The front receiver (B) is located under the front bumper.

There is a winch power disconnect (A) located on thebumper near the receiver.

Connect the winch to the platform. Connect the wiringto the winch disconnect following the manufacturer’sguidelines.

4-4


If you are using a winch to pull out another vehicle,follow the winch manufacturer’s guidelines and observethe following to prevent damage to your vehicle:

• If possible, have your vehicle anchored from theopposite side of the winch to a solid, immovableobject. When winching from the front, use bothof the rear recovery loops.

• Put your transmission in NEUTRAL (N).

• Use your regular brakes to hold your vehicle inplace and block the wheels to keep the vehiclefrom moving.

Notice: Using a power winch with the transmissionin gear to pull out another vehicle may damagethe transmission. When operating a power winch,always leave the transmission in NEUTRAL (N).

If you are using a winch to pull out your own vehicle,follow the winch manufacturer’s guidelines for selfrecovery and observe the following to prevent damageto your vehicle:

• Do not self recover your vehicle by wrapping thewinch cable around an object (such as pulleyblock or tree) and attaching it back to your vehicle’srecovery loops.

• Always attach the winch cable directly to a solidanchor directly in front of your vehicle to achievea straight line pull.

Receiver ExtensionThe receiver extension must be used any time you usethe front receiver.

To install the front receiver extension, do the following:1. Remove any debris from the front receiver

opening.

2. Install the extension (A)and line up the holein the receiver withthe rear hole ofthe extension.

3. Install the retaining pin and spring clip exactlyas the pintle hitch does. Refer to Pintle Hitchon page 4-11.

4-5


Rear Mounted ReceiverThe vehicle may feature a rear mounted receiver.You can use the receiver with a power winch platformor with other accessories. Never use the rear mountedreceiver without the receiver extension.

The rear receiver (B) islocated in the rear bumper.There is a winch powerdisconnect (A) locatedon the bumper nearthe receiver.

Connect the winch to the platform. Connect the wiringto the winch disconnect following the manufacturer’sguidelines.

If you are using a winch to pull out another vehicle,follow the winch manufacturer’s guidelines and observethe following to prevent damage to your vehicle:

• If possible, have your vehicle anchored from theopposite side of the winch to a solid, immovableobject. When winching from the rear, use both ofthe front recovery loops.

• Put your transmission in NEUTRAL (N).

• Use your regular brakes to hold your vehicle inplace and block the wheels to keep the vehiclefrom moving.

Notice: Using a power winch with the transmissionin gear to pull out another vehicle may damagethe transmission. When operating a power winch,always leave the transmission in NEUTRAL (N).

4-6


If you are using a winch to pull out your own vehicle,follow the winch manufacturer’s guidelines for selfrecovery and observe the following to prevent damageto your vehicle:

• Do not self recover your vehicle by wrapping thewinch cable around an object (such as pulleyblock or tree) and attaching it back to your vehicle’srecovery loops.

• Always attach the winch cable directly to a solidanchor directly in the rear of your vehicle toachieve a straight line pull.

Receiver ExtensionThe receiver extension must be used any time you usethe rear receiver.

To install the rear receiver extension, do the following:1. Remove any debris from the rear receiver

opening.

2. Install the extension (A)and line up the hole onthe back side of therear bumper with holeof the extension.

3. Install the retaining pin and spring clip exactlyas the pintle hitch does. Refer to Pintle Hitchon page 4-11.

4-7


Recovery Loops

Front of the Vehicle

Rear of the Vehicle

The vehicle is equipped with two loops on the front andback ends of the vehicle. You may need to use them ifyou are stuck off-road and need to be pulled out to someplace where you can continue driving. The loops meetMIL-STD-209J for the tie-down specifications and notfor vehicle lifting.

4-8


{CAUTION:

These loops, when used, are under a lot offorce. Keep people away from the vicinity ofthe loops and any chains or cables during use.Always pull the vehicle straight out. Never pullon the loops at a sideways angle. The loopscould break off and you or others could beinjured from the chain or cable snapping back.

Notice: Never use the recovery loops to tow thevehicle. Your vehicle could be damaged and it wouldnot be covered by warranty.

When recovering the vehicle, you should determine thedirection of the recovery by the distance required tofree the vehicle from the surrounding terrain.

Secure the towing cable to both front or rear loops witha V-device to gain an even pull on both anchor pointsand avoid damage to the vehicle.

4-9


Enhanced Suspension SystemThe vehicle may have this feature. The enhancedsuspension system is found on vehicles with optionpackage (EMP). The enhanced suspension providessupplemental suspension modifications speciallyengineered for severe service on and off road. Thesystem is comprised of a series of four speciallydesigned and critically damped hydro/pneumatic jounceshocks in parallel with the vehicles primary suspensionfor increased energy dissipation and greatly enhancedall terrain capability. The front and rear suspensionis equipped with this feature. The front factory jouncebumper has been modified to work with this system.This system requires no maintenance or adjustments.

Underbody ProtectionThe vehicle may have this feature. To protect theunderside of the vehicle, multiple skid plates havebeen installed. The skid plates ensure that an optimalamount of the vehicle’s underside is protected fromdamage, but a smooth underside also assists yourvehicle in sliding over obstacles it might otherwise hangup on. When in place, the multiple skid plates allowfull access to maintenance items.

Towing

Towing Your VehicleWhen towing the vehicle, you should always use aproperly equipped wrecker/recovery vehicle. Refer toTowing Your Vehicle and Recreational Vehicle Towing inthe 2005 Vehicle Owner Manual for further informationon towing the vehicle.

4-10


Trailer Connections

The NATO standard 12-pin trailer connector (A) islocated on the rear bumper between the driver’s siderecovery loop and the pintle hitch.

When connecting a trailer wiring harness connector tothe connector, make sure the dog ears of the connectorare properly aligned when inserting it into the connector.

Pintle HitchThe pintle hitch is a dual purpose hitch. It can towtrailers with either a lunnette eye or a standard coupler.The pintle upper jaw closes onto the top of the ballto allow for towing trailers with lunnette eye. The upperjaw locks into up or open position for standardcoupler towing.

The pintle hitch is located at the rear of the vehicle,and is removable.

{CAUTION:

Do not use the pintle hitch if it is worn,damaged or missing parts. An improperlyworking hitch would cause the trailer todisengage from the vehicle and cause youcan lose control of the trailer. You and otherscould be seriously injured. Inspect the hitchbefore using to ensure it is in proper workingcondition.

4-11


Operating the Pintle Hitch:

To Open:

1. Open the latch by removing latch pin (D).

2. Pull up on the lock latch (F) while lifting thelatch (G).

To Close:1. Push the latch (G) until the lock latch (F) locks

in place.

2. Install the latch pin (D).

Installing the Pintle Hitch:1. Install the receiver extension (B).

2. Push the pintle hitch (A) into the receiver extension.

3. Install the retaining pin (E) into the receiverextension and the pintle hitch (A).

4. Install the spring clip (C) into the retaining pin (E).

Towing a TrailerThe vehicle is equipped with a class IV hitch for towinga trailer.

{CAUTION:

If you do not use the correct equipment anddrive properly, you can lose control when youpull a trailer. For example, if the trailer is tooheavy, the brakes may not work well — or evenat all. You and your passengers could beseriously injured. You may also damage your

CAUTION: (Continued)

4-12


CAUTION: (Continued)

vehicle; the resulting repairs would not becovered by your warranty. Pull a trailer only ifyou have followed all the steps in this section.Ask your dealer for advice and informationabout towing a trailer with your vehicle.

You must not exceed the maximum trailer weight towingcapacity for that vehicle. Refer to Towing a Trailer in the2005 Vehicle Owner Manual for additional information.

Power Take-Off (PTO)The main function of this feature is to increase enginespeeds during high electrical load operation of theambulance body. This control is located on the centerof the instrument panel near the radio.

To operate the PTO control do the following:

1. For stationary use shift the transmission intoPARK (P).

2. Turn the PTO rotary switch ON.

3. The blinking LED on the PTO control switchindicates engine speed control is requested.When the engine speed increases the LED (A)will switch from blinking to a steady light.

To use PTO speed control in Preset Mode (FactorySetting) do the following:

1. Select PARK (P) or NEUTRAL (N) range. Applythe parking brake if NEUTRAL (N) is selected.Torque Converter Clutch (TCC) is not availablein NEUTRAL (N) and is available only in PARK (P)when engine speed is above 1,100 rpm.

2. Make sure your foot is off the brake pedal.

3. Select the desired engine speed for maximumcharging. Read the following preset modeinformation regarding operation.

4-13


Preset ModePTO speed control mode is used for stationaryapplications. (PTO set and resume speed controlswill be inoperative.) This mode provides a defaultstandby speed of 800 or 850 rpm (depending on theengine/transmission combination) and two defaultPTO control speeds which follow:

1. PTO Set Speed of 1,250 rpm, or2. PTO Resume Speed of 1,700 rpm.

Vehicles not equipped with cruise control will nothave the resume speed capability.

To use PTO speed control in variable mode(while mobile) do the following:

1. Vehicle speed must be greater than 5 mph.2. Make sure your foot is off the brake pedal.3. Select the desired engine speed by using the

foot pedal, and select SET on the PTO switchor the cruise control.

To use PTO speed control in variable mode(while stationary) do the following:

1. Vehicle speed must be less than 5 mph.2. Make sure your foot is off the brake pedal.3. Select the desired engine speed by using the

foot pedal, and select SET on the PTO switchor the cruise control.

Variable ModePTO speed control mode can be used for both stationaryand mobile applications. This mode allows engine speedto be controlled in a fashion similar to how cruise controlsets vehicle speed. The operator can set to an rpm(between 800 and 2,200) with the cruise control featureor with the SET position on the PTO switch. The operatoris then able to increase rpm in increments of 100, or″tap up″ with the resume position on the cruise control.The operator can also decrease rpm in increments of100 with the SET switch on the PTO or the cruise control.

Vehicles not equipped with cruise control will not havethe ″tap up″ capability. All engine speed values listedabove are factory preset values. With the exception of theTCC lockup speed (1,100 rpm) and the ″tap″ increment(100 rpm), all of these values are programmable and canbe adjusted by your dealer or body upfitter. If the PTOsoftware settings do not match the setting shown here,then they may have already been altered in order tosatisfy the requirements of the installed body equipment.When the PTO switch is turned on, the engine is limitedto 2,200 rpms.

4-14


Fuel ................................................................5-3Using JP8 as a Fuel .......................................5-3

Checking Things Under the Hood .....................5-4Engine Compartment Overview .........................5-4Battery ..........................................................5-5Jump Starting (12V System) ............................5-6Slave Starting (24V NATO Connector) .............5-12

Electrical System ............................................5-15Fuses and Circuit Breakers ............................5-15Blackout Lighting Relay Center .......................5-16Engine Control Module ..................................5-17

Tires ..............................................................5-18Inflation - Tire Pressure .................................5-18Tire Pressure Monitor System .........................5-18Removing the Spare Tire and Tools ................5-18Removing the Flat Tire and Installing

the Spare Tire ..........................................5-26Storing a Flat or Spare Tire and Tools ............5-31Tire Pressure Monitor System

Gage Warning and Displays ........................5-32Tire Pressure Monitor System Switch Panel ......5-33Tire Pressure Monitor System Alerts

and Warnings ...........................................5-35Tire Pressure Monitor System Programming .....5-37

Appearance Care ............................................5-46Washing Your Vehicle ...................................5-46Beadlock Wheels ..........................................5-47Seat Covers .................................................5-47

Four-Wheel Drive ............................................5-48Front Axle ......................................................5-48Rear Axle .......................................................5-48Bulb Replacement ..........................................5-49

Blackout (B/O) Headlamp ...............................5-49Sidemarker Lamps (Maintenance Body) ...........5-49Marker Lamps (Blackout) ...............................5-50Taillamps .....................................................5-50Back-Up Lamps (Ambulance Body) .................5-51Replacement Bulbs .......................................5-51

Vehicle Identification ......................................5-52Shipping Data Plate ......................................5-52Government Vehicle Data Plate ......................5-52

Capacities and Specifications ..........................5-53

Section 5 Service and Appearance Care

5-1


✍ NOTES

5-2


Fuel

Using JP8 as a FuelJP8 fuel is a form of military jet fuel.

Use of JP8 fuel is acceptable in DURAMAX® 6.6Ldiesel vehicles and will not impact warranty coverage.

For additional information on other compatible fuels,refer to the 2005 DURAMAX® Diesel Engine OwnerManual Supplement.

5-3


Checking Things Under the Hood

Engine Compartment OverviewThe following items are options that may be found on the 6.6L vehicle:

5-4


A. 12-Volt BatteryB. Rear Winch Feed (12V Power)C. 24-Volt GeneratorD. 12-Volt GeneratorE. 24-Volt FusesF. 24-Volt RelayG. Blackout (B/O) Lighting Relay CenterH. 24-Volt Accessory Power ConnectorI. Load Disconnect Switch *J. 24-Volt Battery

* Load Disconnect Switch located inside thevehicle on ambulance models.

BatteryThe vehicle may be equipped with deep cyclemaintenance free batteries. When it is time fora new battery, get one that has the replacementnumber shown on the original battery’s label.We recommend an Optima® replacement battery.See Engine Compartment Overview on page 5-4for battery location.

Warning: Battery posts, terminals and relatedaccessories contain lead and lead compounds,chemicals known to the State of California tocause cancer and reproductive harm. Washhands after handling.

Note: There is also a 12-volt battery located onthe frame under the vehicle on the passenger side.

5-5


Vehicle Storage

{CAUTION:

Batteries have acid that can burn you andgas that can explode. You can be badly hurtif you are not careful. See Jump Starting(12V System) on page 5-6 for tips on workingaround a battery without getting hurt.

If you are not going to drive your vehicle for 25 daysor more, disconnect the batteries. Refer to BatteryCable Disconnect/Connect Procedure in the2005 Light Service Support Vehicle (LSSV) TrucksService Manual. This will help keep your batteriesfrom running down.

Jump Starting (12V System)If the battery (or batteries) on the vehicle have rundown and the vehicle will not start, you may want touse another vehicle to provide power to start the vehicle.

Heavy duty jumper cables can be used to jump startthe 12-volt system.

{CAUTION:

Getting between vehicles that are being jumpstarted is dangerous. If the vehicles were tomove you could be seriously injured or killed.Do not stand in front of the vehicle beingjump started.

Never jump start frozen batteries they canexplode. You or others can be could beseriously injured. Allow the battery to thawat room temperature before jump starting.

5-6


{CAUTION:

Batteries can hurt you. They can be dangerousbecause:

• They contain acid that can burn you.• They contain gas that can explode or ignite.• They contain enough electricity to burn you.

If you do not follow these steps exactly, someor all of these things can hurt you.

Notice: Ignoring these steps could result in costlydamage to your vehicle that would not be coveredby your warranty.

Trying to start your vehicle by pushing or pulling itwill not work, and it could damage your vehicle.

This procedure applies only to the underhood batterylocated on the passenger’s side of the vehicle.

1. Check the other vehicle. It must have a 12-voltbattery with a negative ground.

2. Get the vehicles close enough so that jumpercables can reach, but be sure the vehicles arenot touching each other. If they are, it could causea ground causing the vehicle not to start. Thebad grounding could damage the electrical systems.To avoid the possibility of the vehicles rolling, setthe parking brake firmly on both vehicles involvedin the jump start procedure. Put the automatictransmission in PARK (P). Be sure the transfer caseis in a drive gear and is NOT in NEUTRAL (N).

3. Turn off the ignition on both vehicles. Unplugunnecessary accessories plugged into the cigarettelighter or accessory power outlets. Turn off alllamps that are not required as well as radios.This will avoid sparks and help save both batteries.In addition, it could save the radio!

Notice: If you leave the communications/navigationequipment or other accessories on during jumpstarting procedure, they could be damaged.The repairs wouldn’t be covered by the warranty.Always turn off your communications/navigationequipment or other accessories when jumpstarting your vehicle.

5-7


4. Ensure the jumper cables do not have loose ormissing insulation. If they do, you could getshocked and the vehicle could be damaged.Before you connect the cables, here are somebasic things you should know. Positive (+) willgo to positive (+). Negative (−) will go to a heavy,unpainted metal engine part or a remotenegative (−) terminal. The remote negative islocated on the engine drive bracket and ismarked GND (Ground).

5. Open the hood andlocate the battery.Find the positive (+)and negative (−)terminals oneach battery.

{CAUTION:

Using an open flame near a battery can causebattery gas to explode. People have beenhurt doing this, and some have been blinded.Use a flashlight if you need more light.Be sure the batteries have enough water.You don’t need to add water to the Optimabattery (or batteries) installed in every newMilitary vehicle. But if a battery has filler caps,be sure the right amount of fluid is there.If it is low, add water to take care of that first.If you do not, explosive gas could be present.Battery fluid contains acid that can burn you.Do not get it on you. If you accidentally getit in the eyes or on the skin, flush the placewith water and get medical help immediately.

5-8


{CAUTION:

Fans or other moving engine parts can injureyou badly. Keep your hands away from movingparts once the engine is running.

6. Connect the positive (+) cable to the positive (+)terminal of the 12-volt battery (12-volt side) ofthe vehicle with the dead battery.

7. Connect the positive (+)cable to the positive (+)terminal of the 12-voltbattery of the vehiclewith the good battery.

8. Connect thenegative (−) cableto the negative (−)terminal of the 12-voltsystem of the vehiclewith the good battery.

Do not let the other end touch anything until thenext step. The other end of the negative (−) cabledoes not go to the dead battery. It goes to aheavy unpainted metal part of the engine in thevehicle with the dead battery, or to a removenegative (−) terminal if the vehicle has one.

5-9


9. Connect the other endof the negative (–)cable to the remotenegative (–) terminal,marked GND, onthe vehicle with thedead battery.

The electrical connection is just as good there, butthe chance of sparks getting back to the batteryis much less.

10. Start the vehicle with the good battery. Allow thevehicle’s battery to charge for 10 minutes beforeattempting to start the vehicle.Note: It may take up to 30 minutes to charge thebattery enough to start the vehicle, dependingon the battery’s state of charge.

11. Start the vehicle with the dead battery.

Notice: If the jumper cables are connected orremoved in the wrong order, electrical shorting mayoccur and damage the vehicle. The repairs wouldnot be covered by your warranty. Always connectand remove the jumper cables in the correctorder, making sure that the cables do not toucheach other or other metal.

12. Remove the cables in reverse order to preventelectrical shorting. Take care that they do nottouch each other or any other metal.

5-10


Jumper Cable RemovalA. Dead Battery Positive (+) TerminalB. Remote Negative (–) Terminal, marked GNDC. Good Battery Positive (+) TerminalD. Good Battery Negative (–) Terminal

To disconnect the jumper cables from both vehiclesdo the following:

1. Disconnect the black negative (–) cable fromthe vehicle that had the bad battery, or removethe negative terminal.

2. Disconnect the black negative (–) cable fromthe vehicle with the good battery.

3. Disconnect the red positive (+) cable from thevehicle with the good battery.

4. Disconnect the red positive (+) cable from theother vehicle.

5. Return the remote positive (+) terminal cover,if equipped, to its original position.

If this procedure does not work, you will need todisconnect the left front underhood battery and chargeit alone for 10 minutes. Reconnect the battery andrepeat the jump starting procedures as outlined.

Note: This procedure should only be performed byauthorized personnel.

5-11


Slave Starting(24V NATO Connector)If the battery (or batteries) on the vehicle have run downand the vehicle will not start, you may want to useanother vehicle to provide power to start the vehicle.

NATO slave cables are the only recommended methodfor 24-volt jump starting of the vehicle. You shouldonly use NATO slave cables to jump start similarvehicles.

{CAUTION:

Batteries can hurt you. They can be dangerousbecause:

• They contain acid that can burn you.• They contain gas that can explode or ignite.• They contain enough electricity to burn you.

If you do not follow these steps exactly, some orall of these things can hurt you.

Notice: Ignoring these steps could result in costlydamage to your vehicle that would not be coveredby your warranty.

Trying to start your vehicle by pushing or pulling itwill not work, and it could damage your vehicle.

You should only use the NATO slave receptacleand slave cable when performing this operation.

1. Check the other vehicle. It must have a 24-voltbattery with a negative ground.

2. Get the vehicles close enough so that the slavecable can reach, but be sure the vehicles are nottouching each other. If they are, it could causea ground connection causing the vehicle not tostart, and the bad grounding could damagethe electrical systems.To avoid the possibility of the vehicles rolling, setthe parking brake firmly on both vehicles involvedin the jump start procedure. Put the automatictransmission in PARK (P). Be sure the transfer caseis in a drive gear and is NOT in NEUTRAL (N).

5-12


Notice: If you leave the communications/navigationequipment or other accessories on during jumpstarting procedure, they could be damaged.The repairs wouldn’t be covered by the warranty.Always turn off your communications/navigationequipment or other accessories when jump startingyour vehicle.

3. Turn off the ignition on both vehicles. Unplugunnecessary accessories plugged into the cigarettelighter or accessory power outlets. Turn off alllamps that are not required as well as radios.This will avoid sparks and help save both batteries.In addition, it could save the radio!

4. Locate the slavereceptacles onboth vehicles andunscrew the cover.

{CAUTION:

Using an open flame near a battery can causebattery gas to explode. People have beenhurt doing this, and some have been blinded.Use a flashlight if you need more light.Be sure the batteries have enough water.You don’t need to add water to the Optimabattery (or batteries) installed in every newMilitary vehicle. But if a battery has filler caps,be sure the right amount of fluid is there.If it is low, add water to take care of that first.If you do not, explosive gas could be present.Battery fluid contains acid that can burn you.Do not get it on you. If you accidentally getit in the eyes or on the skin, flush the placewith water and get medical help immediately.

5-13


{CAUTION:

Fans or other moving engine parts can injureyou badly. Keep your hands away from movingparts once the engine is running.

5. Connect the slave cable to the vehicle with thedead battery.Note: Use twisting motion when installing slavecable to the receptacle. Forcefully pushing thecable onto the receptacle may cause damage tothe receptacle mount.

6. Connect the slavecable to the vehiclewith the good battery.

Note: Use twisting motion when installing slavecable to the receptacle. Forcefully pushing the cableonto the receptacle may cause damage to thereceptacle mount.

7. Start the vehicle with the good battery.

8. Allow the vehicle with the dead battery to charge for10 minutes.Note: It may take up to 30 minutes to charge thebattery enough to start the vehicle, dependingon the battery’s state of charge.

9. Start the vehicle with the dead battery.Note: Use twisting motion when disconnectingslave cable from the receptacle. Forcefully pullingthe cable from the receptacle may cause damageto the receptacle mount.

10. Remove the slave cable in the reverse orderthat it was installed. Take care not to let thecable ends touch each other or any other metal.

11. Install the covers on both vehicles and fully tightento ensure a proper seal.

12. Clean and stow the slave cable.

5-14


Electrical System

Fuses and Circuit BreakersThe wiring circuits in your vehicle are protected fromshort circuits by a combination of fuses, circuit breakersand fusible thermal links. This greatly reduces thechance of fires caused by electrical problems.

Be sure you replace a bad fuse with a new one of theidentical size and rating.

If you ever have a problem on the road and do not havea spare fuse, you can borrow one that has the sameamperage. Just pick some feature of your vehiclethat you can get along without — like the radio orcigarette lighter — and use its fuse, if it is the correctamperage. Replace it as soon as you can.

The 24-volt fuses are located in the engine compartmenttaped to the 24-volt generator wiring harness. Thesefuses are for the 24-voltmeter gage fuse (5 amp),24-volt trailer fuse (25 amp) and 24-volt accessorypower circuit (25 amp). Your vehicle also has a specialrelay center for the Blackout (B/O) lighting. The relaycenter is located on the underhood fuse block inthe engine compartment on the driver’s side of thevehicle near the 24-volt battery.

See Engine Compartment Overview on page 5-4 formore information on their locations. To remove fuses,hold the end of the fuse between your thumb andindex finger and pull straight out.

5-15


Blackout Lighting Relay CenterThe Blackout Light Relay block is located in theengine compartment on the driver’s side of thevehicle on the underhood fuse block.

See Engine Compartment Overview on page 5-4for location of your vehicle’s Blackout LightingRelay Center.

Lift the cover for access to the relay block.

Relay Block Usage

A Turn Signal Interrupt

B Park Lamp Interrupt

C Headlamp Hi-BeamInterrupt

D Horn Interrupt

E DRL Interrupt

F Headlamp Low-BeamInterrupt

5-16


Engine Control ModuleThis applies only to vehicles that feature OptionPackage EMP (Enhanced Mobility Package).

When tires are changed from the original equipmentsize to those adapted to off-road usage, the EngineControl Module (ECM) must be reprogrammed tocorrect the speedometer reading.

This reprogramming will also limit maximum vehiclespeed to 93 mph (150 km/h).

Truck models K 2500: LLY/LB7 6.6 L V8 Diesel Engineand M74 Automatic Transmission.

Reprogramming the ECM is done with a TECH IIelectronic diagnostic system. Your GM Goodwrench®

dealer has this equipment. Your dealer has the correctcalibration identified by the calibration part numberson the following chart and any later updates after thispublication.

Model Year Engine Transmission New Tire Sizes *Calibration P/N

2003/2004 LB7 M74LT285/75R16(628 Rev/Mile)

(392 Rev per Kilometer)15130245

2004 LLY M74LT285/75R16(628 Rev/Mile)


2005 LLY M74LT285/75R16(628 Rev/Mile)


Please refer to the light duty series GM BODY BUILDER BOOK for further general information regardingvehicle modification.

* New calibrations include maximum vehicle speed of 93 mph (150 km/h)

5-17


Tires

Inflation - Tire PressureFor vehicles without Option Package EMP (EnhancedMobility Package).

Tire pressure should be within the manufacturer’srecommended range as indicated on the certification/tirelabel which is on the drivers door edge. When haulingheavy loads the pressure should be at the maximumallowable pressure.

Refer to Inflation - Tire Pressure in the Index of the2005 Vehicle Owner Manual for additional informationon tire inflation pressure.

If the vehicle features Option Package EMP (EnhancedMobility Package), see Tire Pressure Chart inCapacities and Specifications on page 5-53.

Tire Pressure Monitor SystemNotice: Do not use a tire sealant if your vehiclehas Tire Pressure Monitors. The liquid sealantcan damage the tire pressure monitor sensors.

If the vehicle has this feature, a Tire PressureMonitoring (TPM) system, this system is a sensingdevice designed to identify and display tire operatingdata and activate an alert or warning when tirepressure or temperature irregularities are detected.

Removing the Spare Tire and Tools

Maintenance BodyThe heavy duty bumperof the vehicle has anopening (A) to gain accessto the spare tire hoist.For more informationrefer to Changing a FlatTire in the 2005 VehicleOwner Manual.

5-18


Pickup VehiclesUnder Body Carrier

The heavy duty bumper of the vehicle has an openingin the bumper to gain access to the spare tire hoist.This opening is located behind the license platemount. In order to gain access to this opening youmust lower the license plate. To lower the plateyou must remove the pin (B). Rotate the plate (A)down enough to access the opening. For moreinformation refer to Changing a Flat Tire in the2005 Vehicle Owner Manual.

Cargo Bed Carrier

The cargo bed tire carrier is located in the passengerfront of the cargo bed. To remove the tire, use andturn the wheel wrench counterclockwise and removethe wheel nuts (A).

5-19


Swing Away Carrier

The swing away tire carrier is located at the rear of thevehicle attached to the bumper. To remove the tire,use and turn the wheel wrench counterclockwise andremove the wheel nuts (A).

To open the swing away spare tire carrier, do thefollowing:

{CAUTION:

If you drive with the spare tire carrier unlatched,you could injure pedestrians or damage thevehicle. Make sure the carrier is secure beforedriving.

1. Press the button on the pin (B), which is attachedto the cable (A), to remove the pin from the latchbolt nut (C).

5-20


2. Lift up on the latch on the left side of the vehicleto release the spare tire carrier from the vehicle.The handle will stay in the raised position until thespare tire carrier is closed and latched properly.

3. Swing the spare tire carrier to the side.

To close the swing away tire carrier, do the following:

{CAUTION:

The spare tire carrier must be secured so thatit does not strike and injure someone. Alwaysclose it into the latch forcefully. Make sure thatthe release handle is fully closed (down) andthat the cable is attached.

1. Move the spare tire carrier back into place untilit latches, by closing it into the latch forcefully.The spare tire carrier is latched properly when thelatch handle has lowered to the closed position.

2. Reinstall the cable (A) by pushing in the buttonon the pin (B) and inserting the pin into the latchbolt nut.

3. Pull on the spare tire carrier to make sure it isfirmly latched.

5-21


In Vehicle Carrier

The in vehicle tire carrier is located behindthe passenger seat. To remove the tire turn thenut (A) counterclockwise then remove the tirefrom the carrier.

Ambulance Body

The spare tire is located on the right side front ofthe ambulance behind door (A). A key is required toopen the door. The door is hinged at the bottomand swings down. A ramp is attached to the inside ofthe door to aid in removal and installation of the tire.

5-22


The following steps apply only to vehicles featuringOption Package EMP (Enhanced Mobility Package).For vehicles without EMP refer to the 2005 VehicleOwner Manual.

For regular cab models, the jack you will need isbehind the passenger’s seat.

A. Jack

The equipment is behind the driver’s seat mountedon the floor.

A. Wheel BlocksB. Tire Tools

5-23


For extended cab models, the equipment you will needis under the passenger’s side second row seats.

A. JackB. Tire ToolsC. Wheel Blocks

For crew cab models, the jack you will need is underthe passenger’s side second row seats.

The equipment is under the shelf behind the driver’sside second row seats.

A. Wheel BlocksB. Tire Tools

5-24


To Remove

1. Wing nuts (A) are used to retain the storage bagand tools. To remove them, turn the wing nutscounterclockwise.

2. Remove the wheel blocks by turning the wing nutcounterclockwise.

3. To release thejack from its holder,turn the knob (A)on the jack holdercounterclockwise.

4. Using the wheelwrench and ratchet,remove the retainernut (B) and theretainer (A) orwheel nuts.

5. Remove tire from the vehicle and put thespare tire near the flat tire.

5-25


Removing the Flat Tire andInstalling the Spare TireThis applies to vehicle’s featuring Option PackageEMP (Enhanced Mobility Package) Only. For vehiclewithout EMP refer to the 2005 Vehicle Owner Manual.

Use the following pictures and instructions to removethe flat tire and raise the vehicle.

The tools you will be using include the ratchet (A),the wheel wrench (B), the wheel blocks (C), the jack (D),the jack handle (E), and the extension (F).

1. Ensure that the vehicle is parked on a level surface.

2. Ensure that the vehicle’s transmission is in PARK (P)and the transfer case is NOT in NEUTRAL (N).

3. Set the vehicle parking brake.

5-26


4. Using the wheel blocks, block the opposite tire thatis being changed.

5. Use the ratchet and wheel wrench to loosenall the wheel nuts. Turn the wheel wrenchcounterclockwise to loosen the wheel nuts.Don’t remove the wheel nuts yet.

5-27


6. Assemble the jacking components.

Place the jack only at the appropriate jack point.

7. Front Flat Tire:Position the jackunder the vehicleon the frame behindthe flat tire wherethe frame sectionsoverlap. See thefollowing graphicfor an approximatelocation of the jackon the frame.

8. Rear Flat Tire: Placethe jack under thecurved rear axle pad.Make sure the jackhead is positioned sothat the rear axle padis resting securelyon the jack head.

9. Raise the tire OFF the ground.

{CAUTION:

Getting under a vehicle when it is jacked upis dangerous. If the vehicle slips off the jack,you could be badly injured or killed. Neverget under a vehicle when it is supported onlyby a jack.Front Flat Tire

Rear Flat Tire

5-28


{CAUTION:

Raising your vehicle with the jack improperlypositioned can damage the vehicle and evenmake the vehicle fall. To help avoid personalinjury and vehicle damage, be sure to placethe jack in the proper location before raisingthe vehicle.

10. Remove all thewheel nuts andtake off the flat tire.

11. Remove any rust or dirtfrom the wheel bolts,mounting surfacesand spare wheel.

{CAUTION:

Rust or dirt on the wheel, or on the parts towhich it is fastened, can make the wheel nutsbecome loose after a time. The wheel couldcome off and cause an accident. When youchange a wheel, remove any rust or dirt fromthe places where the wheel attaches to thevehicle. In an emergency, you can use a clothor a paper towel to do this; but be sure touse a scraper or wire brush later, if needed,to get all the rust or dirt off.

5-29


{CAUTION:

Never use oil or grease on studs or nuts. If youdo, the nuts might come loose. Your wheelcould fall off, causing a serious accident.

12. After mounting thespare, put the wheelnuts back on withthe rounded end ofthe nuts towardthe wheel. Tighteneach wheel nutby hand. Then usethe wheel wrenchto tighten the nutsuntil the wheel isheld against the hub.

13. Turn the wheel wrench counterclockwise to lowerthe vehicle and remove the jack.

{CAUTION:

Incorrect wheel nuts or improperly tightenedwheel nuts can cause the wheel to come looseand even come off. This could lead to anaccident. Be sure to use the correct wheelnuts. If you have to replace them, be sure toget new GM original equipment wheel nuts.Stop somewhere as soon as you can and havethe nuts tightened with a torque wrench to theproper torque specification. See Capacitiesand Specifications on page 5-53 for wheel nuttorque specification.

Notice: Improperly tightened wheel nuts can leadto brake pulsation and rotor damage. To avoidexpensive brake repairs, evenly tighten the wheelnuts in the proper sequence and to the proper torquespecification. See Capacities and Specifications onpage 5-53 for the wheel nut torque specification.

5-30


14. Tighten the nutsfirmly in a crisscrosssequence as shownby turning thewheel wrenchclockwise.

Storing a Flat or Spare Tireand ToolsThis applies only to vehicle’s featuring Option PackageEMP (Enhanced Mobility Package) only. For vehicleswithout EMP refer to the 2005 Vehicle Owner Manual.

{CAUTION:

Storing a jack, a tire, or other equipment in thepassenger compartment of the vehicle couldcause injury. In a sudden stop or collision,loose equipment could strike someone.Store all these in the proper place.

Return the jack, wheel blocks, wheel wrench and jackhandle to their location on the floor at the rear of the cab.

To store the flat or spare tire on the tire carrier,do the following:

1. Return the tireback into thetire carrier andinstall retainer (A),washer andretainer nut (B).

2. Turn the nut clockwise until a minimum of 5 visiblethreads are showing.

5-31


Tire Pressure Monitor SystemGage Warning and DisplaysThe Tire Pressure Monitor (TPM) system gage willbe located on the lower left driver side of windshieldmolding. The TPM system gage can display informationsuch as the tire pressure, tire temperature andwarning/alert messages.

A (Programmed Wheel Position): This message willalert the user of which wheel is being programmed and ifthe system is receiving data from that location. This isalso referred to as the Tire Icon.

B (Alarm Indicator Lamp): This will change color ofthe gage backlighting if a wheel problem is detected.

C (Low Pressure Indicator): This message willdisplay to indicate a low wheel pressure condition.

D (Alert Indicator): This message will display toalert the user of a problem. When the alert occurs,stop and check your tire as soon as possible.

E (Learn Mode): This message will display to indicatethe system is in a programming mode for removingor adding wheel sensors.

F (Towing Vehicle Indicator): This message willdisplay to indicate that a towed vehicle data has beenreceived.

G (Numerical Display): The display will indicate thepressure or temperature of the wheel indicated.

H (Units of Pressure or Temperature): This messagewill indicate which unit of measurement has beenselected for the numerical display.

I (Programming Mode): This message will display thatthe system is in a programming mode.

J (Cold Pressure Indicator): This message willindicate that the numerical display is cold tire pressure.

K (Tire Rotation Program): Press this button afterthe tires have been rotated and the new position needsto be updated.

5-32


Tire Pressure Monitor SystemSwitch Panel

The switch panel is located on the instrument panelnext to the steering column. The switch panel’s functionis to program or select certain functions of the system.

A (Tire Button): Press this button to program thesystem.

B (Set Button): Press this button to save a settingand to exit and return to the normal display view.

C (Mode Button): Press this button to enter differentmodes of the programming operation.

Notice: Driving when a TPM system alert orwarning condition is detected, may cause tiredamage. This damage would not be covered bythe vehicle warranty. Reduce vehicle speed toan appropriate safe level and proceed to a safestopping location or facility where the tire canbe inspected and serviced.

The alerts and warnings are as follows:

• The pressure deviation alert indicates that thepressure has dropped a selected amount below therequired pressure for that level of tire temperature.

• The low pressure warning indicates that theair pressure has dropped to a selected minimum.

• The high temperature warning indicates thatthe contained air temperature has exceededthe selected maximum. A tire temperature buildupcan be caused by a number of factors includingsevere under inflation, hard sustained braking,vehicle overload and sustained high speeds.

5-33


Gage FunctionWhen power is applied to the receiver, the gage displaymomentarily turns on all icons, beeps, and the gagebacklight blinks once. The unit then goes into standbymode waiting for data from the wheel transmitters.

Note: Until the vehicle is in motion no data will bereceived from any installed transmitter. The displaywill remain blank.

The gage display has an energy saving feature thatturns lights on to full intensity or active stage onlywhen required to display alert conditions or programthe unit. The gage automatically switches to low powerstage when no control activity is detected.

The respective tire icon is filled in as soon as data fromits transmitter is received. The windshield/louver isshown for any towing vehicle transmitter. After datafrom all transmitters is received the display will be in thestate shown or normal mode until an alert or warningcondition is detected.

Data from a towed vehicle or trailer (if equipped withsensors) is indicated by tire icons with no windshield/louver icon.

The system will alternate views between the towing andtowed vehicle when operating with this configuration.

5-34


Checking Tire Conditions

1. Press the TIREbutton to scrollthrough the tires.

2. Press the MODE button to scroll through thepressure, temperature, and pressure deviationreadings for a selected tire.

3. Press SET button to return to normal mode.

No data received froma selected tire is shownas dashes “- - -”.

Tire Pressure Monitor SystemAlerts and Warnings

Pressure Deviation Alert

The Pressure Deviation Alert is initiated when themeasured tire pressure deviates from the requiredpressure by more than the preset level. The gage lightwill change colors and alert indicator flashes on andoff. The audible alarm sounds once and the digitalreadout displays the amount of deviation from requiredpressure. Press any button to acknowledge the alertand stop the flashing, the gage light remains on andthe system returns to normal mode.

Example:

Pressure Deviation Alert Level = ±5 PSI (0.34 Bar)

Required Pressure = 35 PSI (2.40 Bar)

Actual Pressure in a wheel drops to 30 PSI (2 Bar)

5-35


Pressure Deviation reading as shown will be -5 PSI(0.34 Bar). You should stop and check your tires as soonas possible. The Pressure Deviation Alert is cancelledwhen the tires are properly re-inflated to correct levels.See Capacities and Specifications on page 5-53 forTire Pressure Monitoring System Setting Chart.

Low Pressure Warning

A Low Pressure Warning is initiated when the pressuredrops below the programmed level. The gage light,low-pressure warning indicator and the audible alarm turnon and off continuously. Press any button to acknowledgeand stop the flashing. The gage light remains on andthe display reverts to a normal mode. The Low PressureAlert is cancelled when the tires are properly re-inflatedto correct levels. See Capacities and Specificationson page 5-53 for Tire Pressure Monitoring SystemSetting Chart.

High Pressure Warning

The High Temperature Alert is initiated when the airtemperature within a tire exceeds the programmed level.The temperature alert indicator and audible alarm turn onand off continuously. Press any button to acknowledgethe alert and stop the flashing. The gage light remainson and the display reverts to a normal mode. The HighPressure Alert is cancelled when the tires are properlyre-inflated to correct levels. See Capacities andSpecifications on page 5-53 for Tire Pressure MonitoringSystem Setting Chart.

Error CodeAn E1 error code may be displayed if the vehicle is notin motion for 15 minutes or longer with the key in theON position. If after 5 minutes of driving 6 mph (10 kph)or greater the code is still present, contact yourGM Goodwrench® dealer.

5-36


Tire Pressure Monitor SystemProgramming

1. Ensure the key is in the ON position.

2. Press and hold the Set button in normal modeto enter programming mode:

• 2 seconds for Level 1

• 5 seconds for Level 2

The programming mode indicator will be displayed.

Indicators DisplayedThese gage indicators will display during programming.The lit indicator will informer the user as to whichsection is being programmed.

Level 1• Cold Pressure

• Tire Rotation

• Low Pressure Warning

• Pressure Deviation

• High Temperature Alert

• Units Selection

Level 2• Slope

• Learn Transmitter ID

5-37


Programming – Level 1

Cold Inflation Pressure

See Capacities and Specifications on page 5-53 forTire Pressure Monitoring System Setting Chart forsetting value specifications.

This function changes the cold inflation pressure foreach axle. Factory default setting is 35 PSI (2.41 Bar).

To Program1. Enter Level 1 Programming Mode, see Entering

Programming Mode.

2. Press the TIRE button to scroll to the desired axle.The tires of the selected axle are filled in.

3. Press the MODE button to view the current value.

4. Press the TIRE button to increase the value.

5. Press the MODE button to decrease the value.

6. Press the SET button to save when the desiredvalue is reached.Repeat programming steps 2-6 until Cold InflationPressure levels are set for all axles as desired.

7. Press the SET button to exit.

8. Press the SET button again to revert tonormal view.

5-38


Low-Pressure Warning

This function changes the low-pressure warningthreshold for each axle. Factory default setting is18 PSI (1.24 Bar).

See Capacities and Specifications on page 5-53for Tire Pressure Monitoring System Setting Chartfor setting value specifications.


Programming Mode.

2. To enter this function press the MODE button untilthe flat tire icon and pressure units are displayed.

3. Press the TIREbutton to scroll to thedesired axle. Thetires of the selectedaxle are filled in.

4. Press the MODE button to view the current value.



7. Press the SET button to save when the desiredvalue is reached.Repeat programming steps 2-7 until Low-Pressurewarning levels are set for all axles as desired.


9. Press the SET button again to revert tonormal view.

5-39


Pressure Deviation Alert ±

This function sets the pressure deviation alert thresholdfor all tires. Factory default setting is 5 PSI (0.34 Bar).


Programming Mode.

2. To enter this function press the MODE button untilthe flat tire icon and pressure units are displayed.

3. Press the TIRE button to scroll to the desired axle.The tires of the selected axle are filled in.

4. Press the MODE button to display thecurrent value.



7. To disable this featurepress the MODEbutton until the displayshows OFF.

8. Press the SET button to save when the desiredvalue is reached.

9. Press the SET button twice to revert tonormal view.

Temperature Compensated PressureWhen a tire heats up, the air pressure inside the tirecan also increase. For example, a normal or requiredpressure at 64°F (18°C) may be 34 PSI or (2.34 Bar)and a normal pressure at 120°F (49°C) may be 39 PSI(2.7 Bar). Both pressure readings are correct at theirrespective temperatures. The amount of deviation fromthe required pressure at any temperature can be readby using the Pressure Deviation mode of this system.

5-40


If at any time you are uncertain that the Actual Pressurereading on the gage is the correct tire pressure, switchto the Pressure Deviation (± ) readout. A blank displayindicates that the reading on the display is the correctone. Any (+) or (−) value indicates the tire pressure isincorrect by that value. This value can then be used tocorrectly inflate the tire.

High Temperature Alert

This function changes the high-temperature alertthreshold. Factory default setting is 176°F (80°C).


Programming Mode.

2. To enter this function press the MODE button untilthe alert icon and temperature units are displayed.

3. Press the TIRE button to display the current valueof High Temperature Alert.



6. To disable thisfeature press theMODE buttonuntil the displayreads OFF.

7. Press the SET button to save and exit this modewhen the desired value is reached.

8. Press the SET again to revert to normal mode.

5-41


Measurement Selection-Metric or Imperial

Use this mode to select the combination of pressureand temperature units.

Unit combinations are PSI −°F, Bar −°F, Bar −°C,PSI −°C.


Programming Mode.

2. To enter this function press the MODE buttonuntil the pressure and temperature units aredisplayed (PSI/Bar, °C/°F).

3. Press the TIRE button to enter.

4. Use the TIRE or MODE button to scroll throughthe four combinations of unit settings.

5. When the desired combination is displayed pressthe SET button to save and exit this mode.

6. Press the SET button again to revert tonormal mode.

Tire Rotation Mode

This function is used after tires are rotated and the newpositions need to be updated. This procedure is validfor four tire locations only.

5-42



Programming Mode.

2. To enter this function press the MODE buttonuntil the tire rotation icon is displayed.

3. Press the TIRE button to scroll to a tire position.

4. Press the MODE button to select it for editing.Note: The current tire position number will bedisplayed.

5. Use the TIRE or MODE button to adjust thevalue to the number determined in step 4.

6. Press the SET button when the numberrepresenting the desired sensor is achieved.This returns the display to the tire selectionmenu. Scroll to a different tire location and editthe sensor numbers as above.

7. Press SET button to save and exit this mode.

If more than one tirelocation contains thesame sensor number,the display will promptan error with theconflicting tires filledin and the associatedsensor number. Press anybutton to return the tireselection menu and makenecessary corrections.

Note: This display indicates that ID 1 is programmedin two locations causing the error.

8. Press SET buttonagain to revert tonormal mode.

5-43


Advanced Programming – Level 2Slope Mode SLSee the Tire Pressure Monitoring System Setting Chartfor setting value specifications.

The Slope is a value corresponding to the rate ofpressure change due to temperature for a particular tire.This value affects the calculation to determine pressuredeviation value. The factory default setting is 44.


Programming Mode.

2. Press the TIRE buttonto scroll to the desiredaxle, the tires of theselected axle arefilled in.

3. Press the MODE button to display the currentvalue of slope for the selected axle.


5. Press the MODE button to decrease the value.The minimum value is 10 and the maximum is 160.

6. Press the SET button to save the value.Repeat steps 2-6 until the slope level is set forall axles as desired.


8. Press the SET again to revert to normal mode.

5-44


Learn Mode

This mode is used to add or remove transmitters fromthe system.


Programming Mode.

2. Press the MODE button to select the learnmode icon.

3. Press the TIRE button to display the ten possiblewheel positions for the towing vehicle. The currentlyinstalled transmitter positions are now indicatedwith a filled in tire indicator.

4. Use the TIRE button to scroll to the desiredposition. The outline of the wheel position tobe programmed will flash.

5. A new transmitter identification can be learnedby inflating or deflating the tire by more than3 PSI (0.20 Bar).This method must be carried out while thetransmitters are in gage fill mode. This mode isentered for 15 minutes after the vehicle has beendriven above 6 mph (10 kph). Each transmitter“learn operation” must be carried out at least90 seconds apart. If it is not possible to complete thelearn operation for all transmitters within 15 minutes,the vehicle must again be driven above 6 mph(10 kph) and then the process can be continued.

6. To remove thetransmitter fromthe selected tirelocation, press theMODE button.

Note: To prevent the last identification frombeing erased, scroll to the next tire position beforedriving. A beep and rapid flashing of the gagelight indicate a transmission was received.The new ID is stored.

5-45


7. Press the TIRE button to scroll to another positionand repeat step 4 or 5 as required.

8. Press the SET button to save and exit.If no error is found, the system will reset and goto normal mode.

If more than one tire location contains the samesensor ID, the display will prompt an error and flashbetween this message and the gage display, withthe conflicting tires filled in. If so indicated repeatthe programming procedure above.

Appearance Care

Washing Your VehicleThe exterior finish on the vehicle is a non-gloss orlusterless paint in accordance with MILHDBK-1223.

Wash the vehicle using only mild soap and water.Do not use cleaning agents that are petroleum based,or that contain acid or abrasives. All cleaning agentsshould be flushed promptly and not allowed to dry onthe surface. Do not towel dry or wax the paint surface.High pressure washes may cause water to enterthe vehicle.

Cargo CoverWash the cover using only mild soap and water.Do not use cleaning agents that are petroleum based,or that contain acid or abrasives. All cleaning agentsshould be flushed promptly and not allowed to dryon the surface. Do not towel dry or wax the surface.The windows should be washed with a water soakedcloth, do not rub dry. After washing the cover makesure it is completely dry before lowering it. High pressurewater may cause water to enter the cargo area.

5-46


Beadlock Wheels

{CAUTION:

Traction systems used on a vehicle withoutthe proper amount of clearance can causedamage to the brakes, suspension or othervehicle parts. The area damaged by the tractiondevice could cause you to lose control of yourvehicle and you or others may be injured in acrash. Beadlock wheels or vehicles with militaryoption code EMP should not be used with tirechains or other similar belt or strap tractionsystem. There is not enough clearance.

If the vehicle features Option Package EMP (EnhancedMobility Package) it will feature special rubber beadlocks,made exclusively for use on multi-piece wheels. Thisdevice fits securely between the tire beads and positivelylocks the tire to the wheel rim flange. Beadlocks allowvehicle operation at the low tire air pressure conditionsrequired for better mobility in mud, sand and snow.

By reducing the air pressure, the tire footprint isincreased significantly, thus allowing a greater area oftraction or contact. The beadlock also performs as asafety device to ensure that the tire does not “unseat”from the rim or rotate on the wheel at these low airpressure settings, while also preventing the entry offoreign objects, debris or water into the tire’s air chamber.Replace with the same type, style or size as originallyequipped or the beadlock wheels may not functionproperly. For tire pressures see Capacities andSpecifications in the Index.

Seat CoversThe interior seats have been fitted with fabric seatcovers. The seat covers protect the seat from damageand can be removed for cleaning. Refer to Cleaningthe Inside of Your Vehicle in the Vehicle OwnerManual for fabric cleaning.

5-47


Four-Wheel DriveTransfer Case

Vent FilterThe filter is attached to the transfer case vent tube.It is located on the driver’s side of the transfercase housing.

When to Change the FilterRefer to the Scheduled Maintenance on page 6-2to determine how often to change the filter.

Front AxleVent FilterThe filter is attached to the front axle vent tube.It is located in the engine compartment next to theleft inner wheel housing.


Rear AxleVent FilterThe filter is attached to the rear axle vent tube.It is located near the top of the rear axle housing.


5-48


Bulb Replacement

Blackout (B/O) HeadlampTo replace the blackout headlamp, do the following:

1. Remove the threescrews (A) from thefront of the headlamp.

2. Remove the lens cover from the lamp.

3. Press in on the bulb and turn counterclockwise.

4. Pull the old bulb straight out of the socket.

5. Put the new bulb into the socket and press in andturn clockwise.

6. Install the rubber lens gasket into the lamp groove.

7. Reinstall the lens and tighten the screws.

Sidemarker Lamps(Maintenance Body)Note: The bulbs in the marker lamps are not replaceableand are serviced as an assembly.

1. Using your hands,peel the lens out ofthe rubber seal.

2. Pull the wire connectors out from the backof the lens.

3. Push the wire connectors into the new lens.

4. Install the lens into the rubber seal.

5-49


Marker Lamps (Blackout)The bulbs in the blackout tail/stop lamp and frontmarker lamps are light emitting diodes (LED) insteadof incandescent bulbs. They are not replaceable andare serviced as an assembly. For lamp replacementrefer to the 2005 Light Service Support Vehicle (LSSV)Military Trucks Service Manual.

TaillampsA. Turn Signal LampB. StoplampC. Back-up Lamp

To replace one of these bulbs for the maintenance bodymodels, do the following:

1. Using your hands, peel the rubber seal away fromthe lens.

2. Lift the lens off the lamp assembly.

3. Press in, turn counter-clockwise and pull theold bulb straight out from the socket.

4. Put a new bulb into the socket and press inand turn clockwise until seated.

5. Reinstall the lens and the lens seal. Be surethe lens with the word TOP is facing up.

5-50


Back-Up Lamps (Ambulance Body)To replace the back-up lamp bulb on the ambulancebody models, do the following:

1. Turn the lenscounterclockwiseand remove it fromthe lamp housing.

2. Press in and turn counterclockwise and removethe bulb from the bulb socket.

3. Press in and turn the bulb clockwise into the bulbsocket until seated.

4. Turn the lens clockwise. Be sure the lens isinstalled with the word TOP facing up.

Replacement BulbsLamp Bulb Number

Blackout Headlamp 1073

Rear Turn Signal Lamp* 1156

Back-up Lamp* ** 1156

Taillamp and Stoplamp* 1157

* Maintenance Body Models** Ambulance Body Models

Note: Bulbs not listed here refer to the 2005 VehicleOwner Manual.

Note: The following bulbs are not replaceable and areserviced as an assembly:

Ambulance Body• Clearance lamps

• Taillamp/Blackout (B/O) lamp

LSSV Vehicle• Fiberglass Cap CHMSL lamp

• License Plate lamp

For lamp replacement refer to the 2005 LightService Support Vehicle (LSSV) Military TrucksService Manual.

5-51


Vehicle Identification

Shipping Data Plate

This plate is located on the driver’s side front corner ofthe inner door panel. The data plate is used to informthe operator of the vehicle as to the make, model,Gross Vehicle Weight (GVW), and vehicle dimensions.

Government Vehicle Data Plate

This plate is located on the driver’s side front corner ofthe inner door panel. The data plate is used to informthe operator of the vehicle as to the upfitting informationand other specifications.

5-52


Capacities and SpecificationsWheel Nut Torque

Model Description Torque

C/K 2500 8 bolts (14 mm) 140 lb ft (190 Y)

Tire Pressure – EMP Only *Terrain Deflection Maximum Speed Load Minimum Inflation

Highway **Front Axle — 93 mph (149 km/h) 2400 lbs (1089 kg) 45 PSI (3.10 Bar)

Highway **Rear Axle — 93 mph (149 km/h) 3042 lbs (1390 kg) 65 PSI (4.48 Bar)

Highway *** 18% 93 mph (149 km/h) 2300 lbs (1043 kg) 40 PSI (2.76 Bar)

Cross Country *** 25% 30 mph (48 km/h) 2300 lbs (1043 kg) 23 PSI (1.59 Bar)

Mud, Sand, Snow *** 30% 10 mph (16 km/h) 2300 lbs (1043 kg) 18 PSI (1.24 Bar)

* Option Package EMP (Enhanced Mobility Package) vehicles only. Non-EMP vehicles refer to the Tire and LoadingInformation label attached to the vehicles center pillar (B-pillar), below the driver’s door lock post (striker).

** Inflation pressure needed to obtain the Gross Vehicle Weight Rating (GVWR).

*** All Axles

5-53


Tire Pressure Monitoring System Settings (EMP Only)

Tire Pressure and SlopeTerrain Cold Inflation Pressure Slope

Highway * Front Axle 45 PSI (3.10 Bar) 55

Highway * Rear Axle 65 PSI (4.48 Bar) 75

Highway ** 40 PSI (2.76 Bar) 51

Cross Country ** 23 PSI (1.60 Bar) 34

Mud, Sand, Snow ** 18 PSI (1.24 Bar) 29

Tire Pressure Alerts and WarningsTerrain Deviation Pressure Alert *** Low Pressure Warning

Highway * Front Axle ±5 PSI (0.34 Bar) 33 PSI (2.28 Bar)

Highway * Rear Axle ±5 PSI (0.34 Bar) 40 PSI (2.76 Bar)

Highway ** ±5 PSI (0.34 Bar) 30 PSI (2.07 Bar)

Cross Country ** ±5 PSI (0.34 Bar) 17 PSI (1.17 Bar)

Mud, Sand, Snow ** ±5 PSI (0.34 Bar) 13 PSI (0.90 Bar)

* Factory Tire Pressure Setting

** All Axles

*** From Cold Pressure Tire Setting

5-54


Maintenance Schedule ......................................6-2Maintenance Requirements ..............................6-2Scheduled Maintenance ...................................6-2Maintenance Footnotes ...................................6-2

Recommended Fluids and Lubricants ................6-3Normal Maintenance Replacement Parts ............6-3Maintenance Record .......................................6-4

Section 6 Maintenance Schedule

6-1


Maintenance ScheduleMaintenance RequirementsNotice: Maintenance intervals, checks, inspections, replacement parts, and recommended fluids andlubricants as prescribed in this manual are necessary to keep your vehicle in good working condition.Any damage caused by failure to follow scheduled maintenance may not be covered by warranty.

Scheduled MaintenanceThe following service should be performed at the following mileage intervals.

Service and Miles(Kilometers)

30,000(48 000)

60,000(96 500)

90,000(145 000)

120,000(193 000)

150,000(242 000)

180,000(290 000)

Change Front AxleVent Filter. • • • • • •

Change Rear AxleVent Filter. • • • • • •

Change Transfer CaseVent Filter. • • • • • •

Lubricate Swing AwayTire Carrier Hinge.See footnote (a).

— — — — — —

Maintenance Footnotes(a) Lubricate the swing away tire carrier hinge at vehicle engine oil change intervals. More frequent lubrication maybe required when exposed to a corrosive environment.

6-2


Recommended Fluids and LubricantsFluids and lubricants identified below by name, part number or specification may be obtained from your dealer.

Usage Fluid/Lubricant

Swing Away Spare TireCarrier Hinge

Chassis lubricant (GM Part No. U.S. 12377985, in Canada 88901242) or lubricantmeeting requirements of NLGI #2, Category LB or GC-LB.

Normal Maintenance Replacement PartsReplacement parts identified below by name, part number, or specification can be obtained from yourGM Goodwrench® dealer.

For other replacement parts refer to Scheduled Maintenance in the 2005 Vehicle Owner Manual or themaintenance schedule section in the 2005 DURAMAX® Diesel Engine Supplement.

Part GM Part Number ACDelco® Part NumberVent Filter - Front Axle 5651682 GF-453Vent Filter - Rear Axle 5651682 GF-453Vent Filter - Transfer Case 5651682 GF-453

6-3


Maintenance RecordAfter the scheduled services are performed, record the date, odometer reading, who performed the service and thetype of services performed in the boxes provided. See Maintenance Requirements on page 6-2.

Date Odometer Reading Serviced By Services Performed

6-4



6-5



6-6


Customer Assistance and Information ...............7-2Customer Assistance Offices ............................7-2

Section 7 Customer Assistance Information

7-1


Customer Assistanceand Information

Customer Assistance OfficesFor customer assistance phone numbers,refer to Contact Information.

To assist in our review of your concerns,provide the following information:

1. The Vehicle Identification Number(this will be on the VIN plate in thecab of the vehicle)

2. Current mileage on the vehicle

3. Nature of the problem

Contact InformationDepartment Phone Number

GM CustomerAssistance Center(general information,dealer location,other concerns)

1-800-222-1020

RoadsideAssistance Center(towing and allRoadside Assistanceprogram services)

1-800-243-8872

Online UsersYou can find specific information on:

• Service Parts

• After Sales Assistance

• GM Military History

• News/Events

Refer to the web for updated information:www.gm-defense.com

7-2


AAccessory Panel

Blackout Lighting ........................................... 3-5Exterior Lamps ............................................. 3-3Interior Lamps .............................................. 3-7Overview ..................................................... 3-2Service Lighting ............................................ 3-5

Accessory Power 24 Volt ................................... 2-4Air Filter Restriction Indicator ............................ 3-10Appearance Care

Beadlock Wheels ......................................... 5-47Washing Your Vehicle ................................... 5-46

BBackup Alarm .................................................. 2-4Back-Up Lamps - Ambulance Body

Bulb Replacement ....................................... 5-51Battery ............................................................ 5-5Beadlock Wheels ............................................ 5-47Blackout Lighting .............................................. 3-5

Bulb ReplacementBack-Up Lamps - Ambulance Body ................ 5-51Blackout (B/O) Headlamp ............................. 5-49Marker Lamps - Blackout .............................. 5-50Replacement Bulbs ...................................... 5-51Sidemarker Lamps - Maintenance Body .......... 5-49Taillamps .................................................... 5-50

CCapacities and Specifications ............................ 5-53Cargo Cover .................................................... 2-5Customer Assistance Information

Customer Assistance Offices ........................... 7-2

EEngine

Engine Compartment Overview ....................... 5-4Engine Control Module .................................... 5-17Enhanced Suspension System .......................... 4-10Exterior Lamps ................................................. 3-3

1


FFront Axle

Vent Filter .................................................. 5-48Front Mounted Receiver .................................... 4-4Fuel

Using JP8 as a Fuel ..................................... 5-3Fuses

Blackout Lighting Relay Center ...................... 5-16Fuses and Circuit Breakers ........................... 5-15

GGun Rack

Cab Mount ................................................... 2-9Floor Mount .................................................. 2-8

HHeadlamps - Blackout (B/O)

Bulb Replacement ....................................... 5-49How to Use This Supplement ................................ ii

IInstrument Panel

Accessory Panel Overview ............................. 3-2Interior Lamps .................................................. 3-7

LLamps

Exterior ........................................................ 3-3Interior ......................................................... 3-7

LightingBlackout ...................................................... 3-5Service ........................................................ 3-5

Loading Your Vehicle ........................................ 4-2

MMaintenance Schedule

Front Axle Vent Filter ................................... 5-48Maintenance Footnotes .................................. 6-2Maintenance Record ...................................... 6-4Maintenance Requirements ............................. 6-2Normal Maintenance Replacement Parts ........... 6-3Rear Axle Vent Filter .................................... 5-48Recommended Fluids and Lubricants ............... 6-3

2


Maintenance Schedule (cont.)Scheduled Maintenance ................................. 6-2Transfer Case Vent Filter .............................. 5-48

Manual Windows .............................................. 2-2Marker Lamps

Bulb Replacement ....................................... 5-50

PPintle Hitch .................................................... 4-11Pioneer Tool Kit .............................................. 2-10Power Take-Off (PTO) ..................................... 4-13

RRear Axle

Vent Filter .................................................. 5-48Rear Mounted Receiver ..................................... 4-6Receiver

Front Mount ................................................. 4-4Rear Mount .................................................. 4-6

Recommended Fluids and Lubricants .................. 6-3Recovery Loops ............................................... 4-8Removing the Flat Tire and Installing the

Spare Tire .................................................. 5-26Removing the Spare Tire and Tools ................... 5-18Replacement Bulbs ......................................... 5-51

SSafety Belts

Safety Belts Are for Everyone ......................... 1-4Safety Warnings and Symbols .............................. iiiSeat Covers ................................................... 5-47Service Lighting ................................................ 3-5Sidemarker Lamps - Maintenance Body

Bulb Replacement ....................................... 5-49Specifications, Capacities ................................. 5-53Starting

Jump Starting ............................................... 5-6Slave Starting ............................................. 5-12Starting Your Vehicle ..................................... 2-3

Storage AreasCargo Cover ................................................. 2-5

Storing a Flat or Spare Tire and Tools ............... 5-31

TTaillamps ....................................................... 5-50Tire Pressure Monitor Display ........................... 3-10Tire Pressure Monitor System

Alerts and Warnings ..................................... 5-35Gage Warning and Displays .......................... 5-32Overview .................................................... 5-18Programming .............................................. 5-37Switch Panel ............................................... 5-33

3


TiresInflation - Tire Pressure ................................ 5-18Installing the Spare Tire ................................ 5-26Removing the Flat Tire ................................. 5-26Removing the Spare Tire and Tools ............... 5-18Storing a Flat or Spare Tire and Tools ............ 5-31

TowingPintle Hitch ................................................. 4-11Towing A Trailer .......................................... 4-12Trailer Connections ...................................... 4-11Your Vehicle ............................................... 4-10

Transfer CaseVent Filter .................................................. 5-48

Troop SeatsTroop Seat Operation .................................... 1-2

UUnderbody Protection ...................................... 4-10

VVehicle

Load Disconnect Switch ................................. 2-3Starting Your Vehicle ..................................... 2-3

Vehicle Damage Warnings .................................... iiiVehicle Identification

Government Vehicle Data Plate ..................... 5-52Shipping Data Plate ..................................... 5-52

Vent FilterFront Axle .................................................. 5-48Rear Axle ................................................... 5-48Transfer Case ............................................. 5-48

Voltmeter Gage ................................................ 3-8

WWarnings

Tire Pressure Monitor System Alertsand Warnings .......................................... 5-35

Tire Pressure Monitor System GageWarning and Displays ............................... 5-32

Vehicle Damage .............................................. iiiWindows

Manual ........................................................ 2-2

4


Documents

2005 LSSV Owner Manual Supplement - Fleet Cars, … · GMC Emblem, and the names SILVERADO and SIERRA ... and the owner manual with the vehicle. ... GM Goodwrench® dealer for this